21016640

素因数分解:

$2^6\times 5^1\times {\mathrm{65677}}^1$

素因数の和:65694

約数の個数: 28

約数和(自身を含む): 50046636

約数和(自身を除く): 29029996

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65677, 131354, 262708, 328385, 525416, 656770, 1050832, 1313540, 2101664, 2627080, 4203328, 5254160, 10508320, 21016640]

約数ペア:

[(1, 21016640), (2, 10508320), (4, 5254160), (5, 4203328), (8, 2627080), (10, 2101664), (16, 1313540), (20, 1050832), (32, 656770), (40, 525416), (64, 328385), (80, 262708), (160, 131354), (320, 65677)]